<span>The phosphate enters the ecosystem and becomes tied up in the biogeochemical system where it is recycled. The rapid growth of aquatic vegetation and/or increase in the algal population can cause the death and decay of vegetation and aquatic life because of the decrease in dissolved oxygen levels.</span>
<span>Nuclear provides over half of low-carbon electricity.
</span>Nuclear power<span> plants currently operate in 31 </span>countries, from which most of them are in Europe. The statement that e<span>astern Europe uses nuclear energy for electricity production at a higher proportion compared to other parts of the world is true.</span>
